Cross sections for ionization of uracil by MeV-energy-proton impact
| Autor: | Roberto D. Rivarola, Akio Itoh, M. Imai, Christophe Champion, Y. Iriki |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Physics
Física Atómica Molecular y Química Range (particle radiation) Ionization Proton Ciencias Físicas purl.org/becyt/ford/1.3 [https] Atomic and Molecular Physics and Optics Secondary electrons purl.org/becyt/ford/1 [https] Impact Boundary value problem Born approximation Atomic physics Spectroscopy Uracil Energy (signal processing) CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| DOI: | 10.1103/PhysRevA.88.052711 |
| Popis: | Absolute double differential cross sections (DDCS) have been measured for the ionization of gas-phase uracil (C4H4N2O2) by 0.5, 1.0, and 2.0 MeV proton impacts. Measurements were performed by secondary electron spectroscopy using a 45∘ parallel plate electrostatic spectrometer over an energy range of 1.0–1000 eV at emission angles from 15∘ to 165∘. Theoretical calculation of ionization cross sections has also been carried out by using the first-order Born approximation with correct boundary conditions. Single differential and total ionization cross sections deduced from DDCS revealed fairly good agreement between experimental and theoretical values at all the emission angles investigated. Fil: Itoh, A.. Kyoto University. Department of Nuclear Engineering; Japón Fil: Iriki, Y.. Kyoto University. Department of Nuclear Engineering; Japón Fil: Imai, M.. Kyoto University. Department of Nuclear Engineering; Japón Fil: Champion, C.. Universite de Bordeaux; Francia Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina |
| Databáze: | OpenAIRE |
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